According to Healthline, sleeping on the floor is not healthy for certain people, and there are reasons why it should be avoided. Here are some of the reasons:

1. During the day, the weather in this part of the world is usually hot, while the floor in your room is cold.

However, during the night, the weather becomes cold. If you sleep on the floor overnight, this will expose your body to a low temperature. You might wake up in the morning with frostbite, anemia, or hypothermia.

2. Sleeping on the floor is not healthy for older people because they have weaker spines. They can get bone fractures or cold-related sicknesses by sleeping on the floor.

3. For some people, sleeping on the floor can increase the pain in their spine. This is because sleeping on the floor won't allow your backbone to bend the way it should. This won't benefit your backbone.

If you sleep on a thick mattress, it gives you back pain while sleeping and when you wake up. The floor is logically firmer than a thick mattress and can cause pain in your spine. Studies have shown that for some people, sleeping on the floor doesn't provide relief from back pain as intended.